Geometry
Segments, Rays, Parallel Lines and Planes, Perpendicular Lines
Notes
I can identify parts of a line.
Many geometric figures, such as squares and angles, are formed by parts of lines called
____________________ or ___________.
A __________ is the part of a line consisting of
A ________ is the part of a line consisting of
______________________ are two ____________ rays with ____________________________.
Opposite rays always form a _________.
Example 1: Name the segments and rays in the figure below.
A) The segments are:
B) The rays are:
Example 2: LP and PL form a line. Are they opposite rays? Explain.
Practice
1. Draw and label point W.
2. Draw and label line GH.
3. Draw and label line segment NP.
4. Draw and label ray KL.
5. Draw and label ray LK.
6. Draw and label opposite rays NC and NY.
I can recognize parallel figures, skew lines and perpendicular lines.
Lines that do not intersect may or may not be _________________.
________________________ are __________________________ that do not intersect.
____________________ are ________________; they are ____________________ and
_____________________________.
Segments or rays are parallel if they _______________________________.
They are skew if they ________________________________.
Lines that form a _____________ when they meet are _______________________. The symbol
for perpendicular is
______________________ are planes that ________________________________. A line and a
plane that do not intersect are also __________________.
Example 3: Use the 3-D figure below to answer parts A – H.
A) What sides are parallel to FG ?
B) What sides are skew to FG ?
C) What sides are perpendicular to FG ?
D) What plane is parallel to ADH?
E) Name a pair of parallel lines.
F) Name a pair of parallel planes.
G) Name a pair of skew lines.
H) Name a pair of parallel planes (use 3 or 4 letters).
Practice:
1. Use the diagram of the skyscraper to answer parts A- F.
A) Name all labeled segments that are parallel to DC .
B) Name all labeled segments that are skew to DC .
C) Name all labeled segments that are parallel to GJ .
D) Name all labeled segments that are skew to GJ .
E) Name another pair of parallel segments.
F) Name another pair of skew segments.
2. Use the diagram below to name the figures.
A) Two pairs of parallel planes
B) A line that is parallel to plane GHIJ.
3. Use the figure below to name the figures.
A) Three pairs of parallel planes
B) A line that is parallel to plane QRUV.